Sand-separator.



A. P. SILLIMAN & J. F. LINDBERG.

SAND SBPARATOR. APPLICATION FILED APR.24, i912.

Patented NOV. 12, 1912.

w lll COLUMBIA PLANOGRAPH CO.,WASH1NGTON, D. C.

ARTHUR P. SILLIMAN ANDJOHN F. LINDBERG, OF HIBBING, MINNESOTA.

SAN D-SEPARATOR.

Specification of Letters Patent.

Patented Nov. 12, 1912.

Application filed April 24, 1912. Serial No. 692,898.

To aZZ'w/zom it may concern:

e it known that we, ARTHUR P. SILLI- MAN and JOHN F. LINDBERG, citizens of the United States, residing at Hibbing, in the Louis and State of Minne have invented certain new and Improvements in Sand-Separators, of the following is a specification.

The object of this invention is to p vide simple and The device is intended more specially for use in sinking shafts or other similar work where the water level must be kept low to permit the workmen to operate.

he invention is illustrated in the accompanying drawings and will be hereinafter fully set forth.

In the drawings:Figure l is a perspective view partly broken away of an apparatus embodying our invention,- Fig. 2 is a central' vertical section of the same; Fig. 3 is an invention, we employ a cylindr cal body 1 which should be of steel and equipped with spacing rings 6 between the cylinders, as shown in Figs. 2 and 3. T e upper end of the main cylinder 1 is reinforced through end of the device being thus from the check valve 16. o prevent the weight of the check valve from buckling the top or cover, a reinforcing collar or washer 17 is rigidly secured upon the tion 14 to tube or nipple l5 and bear against the lower end of the body of the check valve.

An air vent 18 is provided in the top or cover 9, and this air vent is preferably in the form of a tube equipped with a vacuum gage l9 and with a hand-controlled cut-off valve 20.

The device is equipped with eyes or rings 21 at its upper end in which may be engaged cables or similar lifting devices to permit the device to be lifted when it is to be transported to another point of operation or it is desired to remove the sand collected below the inner cylinder. On the sides of the main body or cylinder 1, handles 22 are provided whereby the device may be manually lifted for the same purpose.

The use of the device will be readily understood. The suction pipe 23 leading from the check valve is connected to the inlet port of a pump, and the device is lowered until the The lower end of the inner cylinder will project below the end of t e outer cylinder, and the parts should be so proportioned that the inner cylinder will rest upon or be very close to the deposit of sand forming the Water bed. he pumps being then set in motion, will draw the water up through the space between the inner and outer cylinders, and as the water rises above the inner cylinder, it will tend to overflow therein, so that the sand will drop to the bottom of the same.

hen the apparatus is the sand will settle down into the inner cylinder and thereby shut off any possibility of water entering through said cylinder, so that the expansion in the cross area of the rising body of water, the upper end of the inner cylinder the pump.

and the lower end of the outer cylinder The sand will eventually fill the inner cylinder and it can then be removed,

without arresting the operation of the debeing open, and the upper end of the outer vice, by merely shoveling from under the cylinder being in communication with a inner cylinder, so that the sand will gravipum P 2. A device for the purpose set, forth tate therefrom. Any chips, leaves, or other comprising lighter material which may float in the water will be arrested by the screen 12, so that it cannot reach the pump cylinders and interfere with the operation of the an outer cylinder having an open lower end, an inner cylinder having an open upper end below the upper end of the outer cylinder, said inner cylinder being spaced from and projecting below the said outer cylinder, a screen extending across the upper end of the outer cylinder, and a cover fitting over said screen and provided with an outlet.

3. A device for the purpose set forth Should the material arrested by the screen collect therein in such a quantity as to interfere with the operation of the pump, the valve 20 is opened and the pumps temporarily stopped. The water contained within the device will then resume its former level in the main body of water andso flow from the cylinder, and when the cylinder is empty it can be hoisted by the suspending devices attached to the eyes 21, or may be lifted by the handles 22, so that the material collected by the screen will drop out ing open lower ends, the inner cylinder projecting below the outer cylinder and having an open upper end, an outlet from the upper end of the outer cylinder, and lifting devices on the outer cylinder.

4. device for the purpose set forth and the apparatus can again be put in opcomprising an outer cylinder having an eration. open lower end, an inner cylinder having Should the sand be not removed from the open upper and lower ends and pro ecting below the outer cylinder, at the upper end of the outer cylinder, a ring resting on said flange, a screen carried inner cylinder after the same has been filled,

the screen 12 will prevent sand being drawn mto the pumps, and the arrested sand will eventually fill the cylinder 1 and prevent by said ring, a cover supported on said ring water flowing therethrough, this condition and extending over the said screen, said cover having a flattened apex, resting on said flattened apex and having a nip tion tube leading from said valve casing.

In testimony whereof we affix our signatures in presence of two witnesses.

being indicated by the vacuum gage 19 in a well-known manner. The apparatus may then be cleaned and again placed in operation, as before described.

Having thus described our invention, what we claim is 2- 1. A device for the purpose stated com- ARTHUR P. SILLIMAN. [1 s] prising a pair of concentric cylinders, the JOHN F. LINDBERG. [L. s]

Witnesses:

GLADYs M. Rooms, ELLEN J. EKSTISM.

inner cylinder projecting below the outer cylinder and being spaced therefrom and adapted to rest upon the bed of a body of Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

comprising inner and outer cylinders hav an annular flange.

a valve casing le extending therethrough, and a suc- V 

